Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 39, NWS State College, PA

July 23, 2016Lancaster County, York County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 23, 2016, 5:13 PM EDT for Lancaster County, York County, Pennsylvania. It was in force for 62 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 23, 2016, 5:13 PM EDT (21:13 UTC)
Expired
Jul 23, 2016, 6:15 PM EDT
In force
62 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Lancaster County, PA, York County, PA

The radar

The Dover AFB radar (KDOX), 132 km from the middle of the area, began a volume at 21:13 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Jul 23, 5:15 PM EDTHAIL 1Airville, PAQUARTER SIZE HAIL IN AIRVILLE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.2 hours before the alert went out and 135 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2016-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 444 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2016-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
444 J/kg
Mixed-layer CIN
-145 J/kg
Mixed-layer LCL
1393 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

As transmitted.

500 
WUUS51 KCTP 232113
SVRCTP
PAC071-133-232215-
/O.NEW.KCTP.SV.W.0039.160723T2113Z-160723T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
513 PM EDT SAT JUL 23 2016

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN YORK COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
  SOUTHWESTERN LANCASTER COUNTY IN SOUTH CENTRAL PENNSYLVANIA...

* UNTIL 615 PM EDT.

* AT 512 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR BROGUE...
  MOVING SOUTHEAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  DALLASTOWN...SPRY...YORK...RED LION...COLUMBIA...MAYTOWN...
  YORKLYN...DELTA...BROGUE...TYLER RUN-QUEENS GATE...
  STONYBROOK-WILSHIRE...STEWARTSTOWN...YORKANA...WRIGHTSVILLE...
  CROSS ROADS...NORTH YORK...SUNNYBURN...MARIETTA...
  SHENKS FERRY AND SAFE HARBOR.

THIS INCLUDES INTERSTATE 83 FROM MILE MARKERS 12 TO 22.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3999 7675 4008 7657 3976 7606 3976 7608
      3975 7608 3973 7610 3974 7612 3973 7612
      3973 7613 3972 7614 3972 7662
TIME...MOT...LOC 2112Z 325DEG 25KT 3991 7650 

HAIL...1.00IN
WIND...60MPH
 
$$

JUNG
1 follow-up statement
387 
WWUS51 KCTP 232144
SVSCTP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
544 PM EDT SAT JUL 23 2016

PAC071-133-232215-
/O.CON.KCTP.SV.W.0039.000000T0000Z-160723T2215Z/
YORK PA-LANCASTER PA-
544 PM EDT SAT JUL 23 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SOUTHEASTERN YORK AND SOUTH CENTRAL LANCASTER COUNTIES...

AT 543 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM DALLASTOWN TO NEAR HOLTWOOD...MOVING SOUTHEAST AT 25
MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
DALLASTOWN...SPRY...YORK...RED LION...DELTA...BROGUE...
TYLER RUN-QUEENS GATE...STEWARTSTOWN...CROSS ROADS...SUNNYBURN...
WAKEFIELD...HOLTWOOD...YOE...WINDSOR...GRANTLEY...EAST YORK...
FAWN GROVE...SUSQUEHANNA TRAILS...LITTLE BRITAIN AND WINTERSTOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3997 7674 3980 7613 3979 7611 3976 7606
      3976 7608 3975 7608 3973 7610 3974 7612
      3973 7612 3973 7613 3972 7614 3972 7662
TIME...MOT...LOC 2143Z 334DEG 23KT 3990 7665 3979 7627 

HAIL...1.00IN
WIND...60MPH
 
$$

JUNG

The office that day

Everything else NWS State College, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 23, 3:51 PM EDTSpecial Weather StatementCTPLancaster24 min
Jul 23, 4:17 PM EDTSevere Thunderstorm WarningCTPLancaster, York58 min
Jul 23, 5:37 PM EDTAreal Flood AdvisoryCTPLancaster, York3 hr
Jul 23, 5:41 PM EDTSpecial Weather StatementCTPAdams64 min
Jul 23, 6:09 PM EDTSevere Thunderstorm WarningCTPAdams, York66 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2016Every severe thunderstorm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.